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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Realization of superior electrochemical performances for ZnMoO4 anode material through the construction strategy of 3D flower-like single crystalline
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Realization of superior electrochemical performances for ZnMoO4 anode material through the construction strategy of 3D flower-like single crystalline

机译:通过3D花样晶体施工策略实现ZnMoo4阳极材料卓越电化学性能的实现

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3D flower-like single crystalline ZnMoO4 microcrystals have been constructed via a facile one-step hydrothermal process. The influences of reaction time and reaction temperature on phase purities and morphologies of ZnMoO4 microcrystals have been investigated in detail. The results illustrate that 3D flower-like single crystalline ZnMoO4 microcrystals with mesoporous architecture can be obtained after being hydrothermal treated at 150 degrees C for 12 h, which can enhance the stability of structure and facilitate the diffusion of lithium ions. When applied as lithium-ion batteries anode materials, they can deliver a high discharge capacity of 514.9 mAh g(-1) at a current rate of 1 C after 500 cycles with nearly 92% capacity retention based on the discharge capacity of 2nd cycle. Most importantly, they also present superior electrochemical performances even at high rates (the capacities of 316.2 and 216.9 mAh g(-1) even after 2000 cycles at very large current rate of 5 and 10 C, respectively). The electrochemical results further confirm that 3D flower-like single crystalline ZnMoO4 microcrystals possess high capacity, good rate capability and superior cyclic stability. Our work may provide an effective and facile strategy to control the microstructures and boost the electrochemical performances for transition metal molybdate electrode materials. (C) 2019 Elsevier B.V. All rights reserved.
机译:3D花样单晶Znmoo4微晶通过容易的一步水热法构造。详细研究了反应时间和反应温度对ZnMoo4微晶的相纯度和形态的影响。结果说明了在150℃的温度处理12小时后可以获得具有中孔结构的3D花样单晶Znmoo4微晶,其可以增强结构的稳定性并促进锂离子的扩散。当施加作为锂离子电池阳极材料时,它们可以在500次循环后的电流速率为514.9mAhg(-1)的高放电容量,其基于第二周期的放电容量近92%的容量保留。最重要的是,即使在高速率(316.2和216.9mAhg(-1)的高速率下,即使在2000个循环分别为5和10c的情况下,它们也也呈现出优异的电化学性能。电化学结果进一步证实,3D花样单晶ZnMoo4微晶具有高容量,速率且循环稳定性优异。我们的工作可以提供有效的和容易的策略来控制微观结构并提高过渡金属钼酸盐电极材料的电化学性能。 (c)2019 Elsevier B.v.保留所有权利。

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